Total Supplys

Each badge in a collection will have its own circulating supply. For on-chain badges, you can think of the "Mint" address having unlimited balances. All circulating supply originates from a transfer from the Mint address. This can be restricted with the necessary approvals and permissions as desired.

For off-chain badges, this is up to how the balances are allocated by the manager.

Fungible vs Non-Fungible vs Semi-Fungible

You may have heard the terms fungible and non-fungible tokens (NFTs). Fungible means that there is only one badge in a collection with X supply. Non-fungible means that there is multiple badges in a collection, all with a supply of 1.

BitBadges doesn't necessarily categorize them by these names because we use a semi-fungible standard where each badge ID can have its own custom supply.

Burning Badges

Badges cannot be "burned" once created. However, they can be transferred (if allowed) to addresses where no private key is known such as the Ethereum zero address.